JP2005218525A - Cleaning sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiping sheet that has a good texture despite its high strength, has a high effect of removing sebum, and is less likely to remain sticky on the skin after wiping.
The wiping sheet of the present invention comprises (a) at least one kind of inorganic powder, (b) at least one kind of lower alcohol, c) Impregnated with a cleaning liquid containing at least one flame retardant and (d) at least one refreshing agent. The nonwoven fabric is preferably a spunlace nonwoven fabric containing purified cellulose fibers. (A) is one or more of bentonite or kaolin, (b) is ethanol, (c) is one or more of dipotassium glycyrrhizinate, eucalyptus extract, pantothenyl alcohol or bisabolol, and (d) is 1-menthol. preferable.
[Selection figure] None

Description

  The present invention has a high sebum wiping performance, can be used without being crushed or fluffed at the time of use, has a refreshing feeling after use, and has an excellent performance of suppressing the stickiness of the skin, and is particularly suitable for wiping the skin. The present invention relates to a wet wiping sheet to be used in the process.

  Conventionally, in order to remove sebum dirt, a solid, paste-like or liquid detergent mainly composed of a surfactant is used, or a method of wiping with a sheet soaked with a washing liquid is used. However, these surfactant-based cleaning agents must be washed away with water in order to solubilize or emulsify and remove sebum stains, and are limited to use in water, including washstands and clothes. There was a problem that the active agent remained on the site (hairline, chin, etc.) that was dirty or could not be rinsed. In addition, the sheet-shaped cleaning agent has the effect of removing dirt on the skin, but the sebum dirt cannot be completely removed, and the skin remains sticky. Compared to washing with water when used in summer, etc. There are problems such as inferiority. In addition, there is a problem that the cleaning power is inferior to a cleaning agent mainly composed of a normal surfactant. Furthermore, in the conventional sheet, the sheet may become fluffy when wiped off, and the fibers may remain on the skin.

  Under such a background, a wiping sheet comprising an oil-absorbing powder and a lower alcohol in a nonwoven fabric composed of continuous long fibers has been proposed (see Patent Document 1). This wiping sheet has a high detergency for not only dirt on the skin but also sebum, and can keep the skin clean and clean the skin without choosing a place.

JP-A-11-299538

  The objective of this invention is providing the sheet | seat for wiping which the performance improved further compared with the sheet | seat for wiping of the prior art mentioned above.

  The present invention provides a non-woven fabric comprising cellulose-based fibers as at least a part of constituent fibers, (a) at least one inorganic powder as component, (b) at least one lower alcohol as component, and (c) at least as component. The object is achieved by providing a wiping sheet impregnated with one type of flame retardant and a cleaning liquid containing at least one type of cooling agent as component (d).

  The wiping sheet of the present invention has a good texture despite its high strength. Therefore, the wiping sheet of the present invention has a good feel when the skin is wiped, and the sheet is less likely to be twisted or fluffed. In addition, the wiping sheet of the present invention is highly effective in removing sebum, has a high sustained release property, and has a very high refreshing feeling after wiping and after wiping, and the skin remains sticky after wiping. Hateful. In addition, the sheet of the present invention is less likely to seep out of liquid even when pressure is applied to the packaging bag during storage, and the inorganic powder is less likely to flow out into the packaging bag.

  Hereinafter, the present invention will be described based on preferred embodiments thereof. The wiping sheet of the present invention is obtained by impregnating a base sheet with a cleaning liquid. As a base material sheet, it consists of a nonwoven fabric which uses a cellulosic fiber at least as a part of constituent fiber. Cellulosic fibers are highly water-absorbing and give skin-friendly feel. As the cellulosic fiber, it is preferable to use a fiber mainly composed of natural cellulose. Examples of such fibers include natural fibers such as cotton, regenerated fibers such as rayon and cupra, and semisynthetic fibers such as acetate. Particularly preferred cellulosic fibers are purified cellulose fibers. Purified cellulose fiber has high water absorption and is high in strength compared to rayon and cotton. Purified cellulose fibers are less susceptible to blurring during use, especially with little reduction in strength when wet. Despite its high strength, it has a soft feel. Therefore, by producing a nonwoven fabric using purified cellulose fibers as a raw material, the resulting nonwoven fabric has high strength and is flexible. As a result, the touch when the skin is wiped is improved. In addition, the sheet is less likely to be twisted or fluffed during use. Further, even when impregnated with a cleaning solution, the strength is hardly reduced. Moreover, since the nonwoven fabric which consists of refined cellulose fiber dries quickly, by using it by impregnating the washing | cleaning liquid containing a lower alcohol, it can take away more heat of vaporization and can improve the refreshing feeling at the time of use.

  A particularly preferred refined cellulose fiber is a refined cellulose fiber obtained by purifying pulp. A solvent such as amine oxide is used for purification. Pulp refined by the solvent is extruded through countless fine holes. As a result, continuous filaments are obtained, and the filaments are cut to obtain staple fibers. As the purified cellulose fiber thus obtained, for example, Tencel (registered trademark) of Accordis (UK), Lyocell (registered trademark) of Lenzing (Austria), etc. are known and can be obtained from these manufacturers. is there.

  The nonwoven fabric used as the substrate sheet is produced by a known nonwoven fabric production method. Considering that the constituent fibers of the nonwoven fabric are purified cellulose fibers, the nonwoven fabric is preferably produced by a dry spunlace method, a wet spunlace method, a thermal bond method, a resin bond method, or the like. In particular, it is preferably produced by a dry spunlace method or a wet spunlace method from the viewpoint that the texture becomes good.

  Cellulose fibers are not particularly limited in fiber length, and those having an appropriate length are used depending on the method for producing the nonwoven fabric. For example, when a nonwoven fabric is produced by a spunlace method, staple fibers are preferably used. In general, the fiber length is preferably from 0.5 to 100 mm, and more preferably from 25 to 60 mm, particularly when produced by the dry spunlace method.

  The thickness of the cellulosic fiber is not particularly limited. From the viewpoint of maintaining the strength of the nonwoven fabric and improving the texture, it is preferably 0.88 to 5.5 dtex, more preferably 0.99 to 4.4 dtex, and 1.1 to 3.3 dtex. More preferably it is. The cellulosic fiber may have crimps. In this case, the number of crimps is preferably 0.1 to 3 / cm. Due to the presence of the crimp, the gradual release of the cleaning liquid is excellent and the refreshing feeling during use can be improved. Moreover, since it has moderate cushioning property, the touch at the time of use is excellent.

  The nonwoven fabric may be composed of 100% cellulosic fibers, or may be mainly composed of cellulosic fibers and contain a small amount of other fibers. Examples of other fibers include heat-fusible fibers that are used for the purpose of improving the strength of the nonwoven fabric, and synthetic fibers that are used for the purpose of improving the bulkiness and the sustained release property of the cleaning liquid. From the viewpoint of improving the texture, the nonwoven fabric is preferably composed only of cellulosic fibers. Cellulosic fibers may be fibrillated by selecting processing conditions. By fibrillation, the capillary force increases and the liquid retention can be improved.

  The nonwoven fabric can be used as a single layer (one ply) sheet. Alternatively, a plurality of the same type of single-layer sheets may be overlapped, or the single-layer sheets may be folded and used in a multiple-layer state. Furthermore, if necessary, it may be laminated with other sheets. Preferably, it is used as a single-layer sheet, a plurality of the same kind of single-layer sheets are stacked, or a single-layer sheet is folded and used in a multi-layer state. The thickness of the single-layer sheet is preferably 0.2 to 0.7 mm, more preferably 0.25 to 0.55 mm, and more preferably 0.3 to 0.5 mm before being impregnated with the cleaning liquid. It is more preferable that

Nonwoven fabric made of cellulose fibers, it is even if there either a single layer and plural layers, a basis weight of 15~110g / m ^2, to be particularly 20 to 80 g / m ^2, the nonwoven This is preferable from the viewpoint of maintaining strength and improving the texture.

  The nonwoven fabric may have a smooth surface, but preferably has a large number of small holes and is mesh-shaped. Thereby, the touch becomes good. Moreover, the appearance impression is also improved. The size of the small aperture is preferably about 0.05 to 5 mm in diameter. The shape of the small aperture is not particularly limited, and may be a circular shape, an elliptical shape, a polygonal shape, a combination thereof, or an irregular shape for each hole. The open area ratio is preferably about 10 to 90%. The hole area ratio is obtained by taking an image of a non-woven fabric with a digital camera or the like, capturing an image, and calculating the area with image processing software or the like. A nonwoven fabric having small openings is manufactured by using a material having a large number of irregularities as a water-permeable conveyor for conveying a web when the web is hydroentangled in a spunlace method, for example.

The cleaning liquid impregnated in the nonwoven fabric contains the following components (a) to (d).
(A) At least one inorganic powder as a component.
(B) At least one lower alcohol as a component.
(C) At least one anti-inflammatory agent as a component.
(D) At least one refreshing agent as a component.

  As the inorganic powder as the component (a), for example, silica, alumina, talc, kaolin, mica, mica titanium, titanium oxide, bentonite, zeolite, gunjo, zinc white, iron oxide and the like can be used. In particular, in order to remove sebum and prevent stickiness from remaining on the skin after use, it is preferable to add bentonite or kaolin. In order to further enhance the effect, it is more preferable to add both bentonite and kaolin. For this purpose, bentonite and kaolin preferably have an average particle size of 1 to 20 μm, particularly 1.5 to 10 μm. The average particle diameter is measured by a laser diffraction type particle size distribution measuring machine or the like.

  As a result of the examination by the present inventors, the inorganic powder as the component (a) exhibits a desired effect even if its blending amount is small. Specifically, if the compounding amount of the component (a) is about 0.01 to 10% by weight, particularly about 0.01 to 5% by weight, the desired effect is sufficiently exhibited.

  In particular, when the skin is wiped by impregnating a non-woven fabric made of purified cellulose with a cleaning liquid containing bentonite or kaolin having the above average particle size in the above blending amount, absorption of sebum The effect of improving the smooth feeling is obtained.

  As the lower alcohol as the component (b), for example, ethyl alcohol or isopropyl alcohol is preferably used. From the viewpoint of safety and odor, ethyl alcohol is preferably used. Lower alcohol is highly volatile and has a refreshing feeling when used.

  If the content of the lower alcohol as the component (b) is 1 to 50% by weight, particularly about 5 to 30% by weight, the desired effect is sufficiently exhibited.

  As the anti-inflammatory agent as component (c), dipotassium glycyrrhizinate, stearyl glycyrrhetinate, sodium hyaluronate, allantoin, pantothenyl alcohol, bisabolol, tetramethyltrihydroxyhexadecane, eucalyptus extract, aloe vera extract, sicon extract, yukinoshita extract, yokuinine extract Etc. can be used. In order to have an anti-inflammatory effect against acne, folliculitis, and the like, and to exhibit a skin care effect, it is preferable to blend at least one of dipotassium glycyrrhizinate, eucalyptus extract, pantothenyl alcohol, or bisabolol. Furthermore, from the viewpoint of further enhancing the effect, it is more preferable that two or more of the four types of flame retardants are blended, and that all the four types of flame retardants are further included. preferable.

As a result of the examination by the present inventors, the component (c) also exhibits a desired effect even when its blending amount is small. Specifically, if the compounding amount of the component (c) is about 0.001 to 1% by weight, particularly about 0.01 to 0.5% by weight, the desired effect is sufficiently exhibited.

  (D) As a refreshing agent which is a component, 1-menthol, d-menthol, dl-menthol, camphor, thymol, etc. can be used. As a result of the study by the present inventors, the component (d) also exhibits a desired effect even if its blending amount is small. Specifically, when the amount of component (d) is about 0.05 to 1% by weight, the desired effect is sufficiently exhibited. In particular, by combining ethanol, which is a lower alcohol, with menthol such as l-menthol, d-menthol, and dl-menthol, the refreshing feeling at the time of use and after use can be improved. In particular, when the blending amount of ethanol is 15 to 25% by weight and the blending amount of menthol is 0.05 to 0.15% by weight, a higher refreshing feeling can be obtained.

  In addition, non-ion such as polyethylene alkyl ether, polyethylene polyoxypropylene glycol, polyoxyethylene polyoxypropylene alkyl ether, polyhydric alcohol fatty acid partial ester, polyoxyethylene polyhydric alcohol fatty acid partial ester, polyoxyethylene hydrogenated castor oil Systemic surfactants, polyhydric alcohols such as glycerin and 1,3-butylene glycol, glycol ethers, fragrances, preservatives, pH adjusters such as organic acids and phosphoric acids, electrolyte substances, and the like can be blended.

  The point that the cleaning liquid is impregnated with 100 to 500% by weight, particularly 250 to 400% by weight, on the nonwoven fabric as the base sheet, exhibits a sufficient wiping effect, and prevents the cleaning liquid from dripping during use. To preferred.

  The wiping sheet of the present invention is preferably packaged in a predetermined packaging material before use. The packaging form is not particularly limited, but taking into account the use of the product on the go with a bag, 5-30 sheets are stacked and stored in a non-moisture permeable and liquid impermeable bag-like package. It is preferable to be packaged in such a state. In the case of such a packaging form, it is carried in a state of being stored in a bag, handbag, pocket or the like. In such a case, the sheet is easily crushed due to external pressure applied to the sheet. When the sheet is crushed, the cleaning liquid may ooze out of the sheet, and the inorganic powder may flow out of the cleaning liquid. Due to this, the blending amount of the inorganic powder may change, and the performance of the wiping sheet may deteriorate. In order to prevent the inorganic powder from flowing out, it is preferable to crimp the cellulose fibers constituting the nonwoven fabric so that the nonwoven fabric is bulky and has cushioning properties. This makes it harder to crush than non-woven fabrics made of other fibers, can effectively prevent the cleaning liquid and inorganic powder from flowing out of the wiping sheet, and can fully demonstrate the original performance of the wiping sheet. .

  Further, in the case of the packaging form as described above, it is often displayed in a state of being hung from a store with a hook or the like. By being suspended for a long time, the cleaning liquid may drop downward due to gravity. In such a case, the cleaning liquid may ooze out of the sheet and the inorganic powder may flow out of the sheet. In order to prevent the outflow of the inorganic powder, it is preferable to use the purified cellulose fiber described above as the cellulosic fiber constituting the nonwoven fabric. As a result, the nonwoven fabric can be made bulky and have a high liquid retaining property, and the cleaning liquid is unlikely to fall down and from the sheet.

  The wiping sheet of the present invention is suitable as a sheet for wiping hair and skin, particularly as a sheet for wiping the face. As for the method of use, it is only necessary to wipe the face or the like according to a conventional method.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples. Unless otherwise specified, “%” means “% by weight”.

[Example 1]
(1) Production of non-woven fabric A staple fiber of purified cellulose fiber (Tencel (registered trademark)) purified from pulp was used as a raw material to produce a web using a card machine. The thickness was 1.7 dtex, the fiber length was 38 mm, and the number of crimps was 2.3 pieces / cm. This web was hydroentangled to obtain a spunlace nonwoven fabric. The basis weight of the nonwoven fabric was 30 g / m ² and the thickness was 0.4 mm. A large number of elliptical small holes having a major axis of 1.3 mm and a minor axis of 0.7 mm were formed in the nonwoven fabric. The open area ratio was 41%.

(2) Preparation of cleaning liquid A cleaning liquid having the composition shown in Table 1 below was prepared.
・ Bentonite (average particle size 7μm) 0.1%
・ Kaolin (average particle size 2μm) 0.2%
・ Panthenol 0.03%
・ Bisabolol 0.01%
・ Dipotassium glycyrrhizinate 0.05%
-Eucalyptus extract 0.03%
・ Ethyl alcohol 20%
・ L-menthol 0.1%
・ Purified water balance

(3) Production of wiping sheet The non-woven fabric obtained in (1) was impregnated with the cleaning liquid obtained in (2) to obtain a wiping sheet. The impregnation rate of the cleaning liquid was 300%.

[Examples 2 to 4]
A wiping sheet was obtained in the same manner as in Example 1 except that the cleaning liquid having the composition shown in Table 1 below was used and the nonwoven fabric shown in the same table was used as the base sheet.

[Comparative Example 1]
A web was manufactured by using a card machine using a staple fiber of PET / PE core-sheath fiber as a raw material. The thickness was 3.3 dtex and the fiber length was 51 mm. An air-through nonwoven fabric was obtained from this web by an air-through method. The basis weight of the nonwoven fabric was 54 g / m ² and the thickness was 0.6 mm. The nonwoven fabric surface was plain. The nonwoven fabric sheet thus obtained was impregnated with the cleaning liquid shown in Table 1 below as a cleaning liquid to obtain a wiping sheet. The impregnation rate of the cleaning liquid was 300%.

[Comparative Example 2]
A web was manufactured by using a card machine using a staple fiber of PP / low melting point PP core-sheath fiber as a raw material. The thickness was 2.2 dtex and the fiber length was 44 mm. A heat embossed nonwoven fabric was obtained from this web by the heat embossing method. The basis weight of the nonwoven fabric was 18 g / m ² and the thickness was 0.2 mm. The nonwoven fabric surface was plain. The nonwoven fabric sheet thus obtained was impregnated with the cleaning liquid shown in Table 1 below as a cleaning liquid to obtain a wiping sheet. The impregnation rate of the cleaning liquid was 300%.

[Performance evaluation]
About the wiping sheet | seat obtained by the Example and the comparative example, 10 panelists were made to perform face cleaning, and the external appearance, the touch, the wiping property, and the cool feeling were evaluated on the following references | standards. The results are shown in Table 1.

Appearance: The appearance of the sheet was evaluated according to the following criteria.
◎: Very good "8 out of 10 respondents said the appearance is good"
○: Good “7 out of 10 responded that the appearance is good”
○ to △: “Normally, 6 out of 10 responded that the appearance is good”
△: Bad “4 out of 10 people answered that the appearance is good”
×: Very bad “less than 3 people out of 10 answered that the appearance is good”
-Feel: The overall feeling of use such as the residual feeling of the cleaning liquid when wiping with a sheet, no stickiness, and a refreshing feeling was evaluated according to the following criteria.
◎: Very good “Reply that 8 out of 10 feel good”
○: Good “7 out of 10 responded that the feel is good”
○ to △: “Normally, 6 out of 10 responded that they feel good”
△: Bad “Respondents that 4 to 5 out of 10 feel good”
×: Very bad “Out of 10 people, 3 or fewer responded that the feel was good”
-Wipeability: The ease of removing dirt when wiping with a sheet was evaluated according to the following criteria.
◎: Very good “8 out of 10 people answered that wiping is good”
○: Good “7 out of 10 responded that wiping is good”
○ to △: “Normally, 6 out of 10 responded that wiping is good”
△: Bad “4 out of 10 people answered that the wipeability is good”
×: Very bad “Out of 10 people, 3 or fewer responded that the wiping property was good”
-Refreshing feeling: The refreshing feeling after wiping with a sheet and after wiping was evaluated according to the following criteria.
◎: Very good “8 out of 10 responded that the refreshing feeling is good”
○: Good “7 out of 10 responded that the refreshing feeling is good”
○ to △: “Normally, 6 out of 10 responded that they feel cool”
△: Bad “4 out of 10 people answered that 5 or less people had a good refreshment”
×: Very bad “No more than 3 people answered that the refreshing feeling is good in 10 people”

  As is clear from the results shown in Table 1, the wiping sheet of the example (product of the present invention) is superior in all appearance, feel, and wiping properties as compared with the wiping sheet of the comparative example. I understand.

Claims (5)

  A nonwoven fabric comprising at least a part of the constituent fibers of cellulosic fibers, (a) at least one inorganic powder as component, (b) at least one lower alcohol as component, and (c) at least one flame extinguisher as component And a wiping sheet impregnated with a cleaning liquid containing at least one kind of cooling agent as a component and component (d).   The wiping sheet according to claim 1, wherein the cellulosic fibers are purified cellulose fibers.   The wiping sheet according to claim 1 or 2, wherein the nonwoven fabric is a spunlace nonwoven fabric.   The wiping sheet according to any one of claims 1 to 3, wherein the nonwoven fabric has a large number of small apertures and has a mesh shape. The inorganic powder of component (a) is bentonite and / or kaolin, the lower alcohol of component (b) is ethyl alcohol, and the anti-inflammatory agent of component (c) is dipotassium glycyrrhizinate, eucalyptus extract, pant The wiping sheet according to any one of claims 1 to 4, wherein the wiping sheet is impregnated with at least one of tenyl alcohol or bisabolol, and impregnated with a cleaning liquid in which the refreshing agent of component (d) is menthol.